test.ipynb

{
  "cells": [
    {
      "cell_type": "code",
      "outputs": [
        {
          "output_type": "display_data",
          "data": {
            "text/html": "<img src=x onerror=alert(document.domain)>"
          }
        }
      ],
      "source": ["print('hello')"]
    }
  ],
  "metadata": {"kernelspec": {"display_name": "Python 3"}},
  "nbformat": 4,
  "nbformat_minor": 5
}